#7A66D2
Closest named color: Dark Periwinkle (#665FD1). oklch(58.1% 0.16 288.9), rgb(122, 102, 210).
Aa
Black text reads best on this color (4.65:1).
About this color
#7A66D2 is a medium-dark, vivid purple. In OKLCH its lightness is 58%, its chroma 0.160 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.037 away. Black text reads best on it, at 4.65:1.
| Hue family | Purples |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.65:1 |
| White text | 4.50:1 |
Values
| HEX | #7A66D2 |
| RGB | rgb(122, 102, 210) |
| HSL | hsl(251, 55%, 61%) |
| OKLCH | oklch(58.1% 0.16 288.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #7A66D2 | 4.50:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #7A66D2 | 4.65:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #7A66D2 text on white | 4.50:1 | AA | Lc 71.1 | Content text, not long reading |
| #7A66D2 text on black | 4.65:1 | AA | Lc -30.6 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F3
oklch(88.5% 0.041 290.1)
-
Step 300
300
#BEBAED
oklch(80.9% 0.072 288.3)
-
Step 400
400
#9E94E4
oklch(70.7% 0.116 288.8)
-
Step 500
500
#8878DC
oklch(63.2% 0.147 288.8)
-
Step 600
600 (this color)
#7A66D2
oklch(58.1% 0.16 288.9)
-
Step 700
700
#614DAE
oklch(49.1% 0.149 289.2)
-
Step 800
800
#4F408D
oklch(42.8% 0.123 289.1)
-
Step 900
900
#413771
oklch(37.8% 0.096 288.9)
-
Step 950
950
#262142
oklch(27.1% 0.06 288.7)
#7A66D2 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3679D6 | 0.087 |
| Deuteranopia (no green cones) | #3874D0 | 0.083 |
| Tritanopia (no blue cones) | #617D92 | 0.134 |
| Achromatopsia (no color) | #777777 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #7A66D2
#7A66D2
oklch(58.1% 0.16 288.9)
- #818000
#818000
oklch(58.2% 0.126 109.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #7A66D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.037
- Light Indigo #6D5ACF ΔE 0.037
- Slate Blue #6A5ACD ΔE 0.041
- Medium Slate Blue #7B68EE ΔE 0.042
- Purpley #8756E4 ΔE 0.049
- Medium Purple #9370DB ΔE 0.050
- Deep Lavender #8D5EB7 ΔE 0.052
- Iris #6258C4 ΔE 0.057
Use #7A66D2 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.